A novel histidine-functionalized 1,8-naphthalimide-based fluorescent chemosensor for the selective and sensitive detection of Hg<sup>2+</sup> in water
作者:You-Ming Zhang、Kai-Peng Zhong、Jun-Xia Su、Xiao-Peng Chen、Hong Yao、Tai-Bao Wei、Qi Lin
DOI:10.1039/c6nj03930h
日期:——
water and show high selectivity and sensitivity for Hg2+ in aqueous solution. Other coexistent competitive metal ions (Fe3+, Ag+, Ca2+, Cu2+, Co2+, Ni2+, Cd2+, Pb2+, Zn2+, Cr3+, and Mg2+) had no interference in the process of detecting Hg2+. The detection limit of sensor Z towards Hg2+ was 1.785 × 10−7 M, which indicated its high detection sensitivity. Moreover, the immediate response of Z to Hg2+
Hg 2+是最具威胁性的重金属离子之一;因此,找到一种快速简便的检测方法非常重要。在这项研究中,我们设计并合成了一个简单的Hg 2+化学传感器Z,其带有羧基和咪唑基部分作为亲水基团位点和Hg 2+结合位点,而萘二甲酰亚胺部分则充当信号基团。有趣的是,传感器Z可以溶于水,并且对水溶液中的Hg 2+具有很高的选择性和灵敏度。其他共存的竞争性金属离子(Fe 3+,Ag +,Ca 2 +,Cu 2 +,Co 2 +,Ni2+,Cd 2 +,Pb 2 +,Zn 2 +,Cr 3+和Mg 2+)在检测Hg 2+的过程中没有干扰。传感器Z对Hg 2+的检测极限为1.785×10 -7 M,表明其高检测灵敏度。此外, Z对Hg 2+的即时响应为水溶液中Hg 2+的实时检测提供了一种方法。另外,传感器Z可以经历循环利用。